Changed copyright notice wording in post-editor.js
Database schema added; cheater command worked on

- Timestamp columns inflate/deflate to Mafia::Timestamps and create/update as expected
- `db` helper added to MojoMafia.pm
- Added some dependencies
- Ticked minor version (0.1.x -> 0.2.x)
- Removed Mafia::DateTime
Some preliminary work on game threads
Persona login/register implemented
Minor version tick (0.2.x -> 0.3.x)